]> jfr.im git - solanum.git/blob - ircd/s_user.c
projects / solanum.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Normalize snprintf size to use sizeof where possible
[solanum.git] / ircd / s_user.c
1 /*
2 * ircd-ratbox: A slightly useful ircd.
3 * s_user.c: User related functions.
4 *
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
22 * USA
23 */
24
25 #include "stdinc.h"
26 #include "s_user.h"
27 #include "channel.h"
28 #include "class.h"
29 #include "client.h"
30 #include "hash.h"
31 #include "match.h"
32 #include "ircd.h"
33 #include "listener.h"
34 #include "msg.h"
35 #include "numeric.h"
36 #include "s_conf.h"
37 #include "s_newconf.h"
38 #include "logger.h"
39 #include "s_serv.h"
40 #include "s_stats.h"
41 #include "scache.h"
42 #include "send.h"
43 #include "supported.h"
44 #include "whowas.h"
45 #include "packet.h"
46 #include "reject.h"
47 #include "cache.h"
48 #include "hook.h"
49 #include "monitor.h"
50 #include "snomask.h"
51 #include "substitution.h"
52 #include "chmode.h"
53 #include "s_assert.h"
54
55 static void report_and_set_user_flags(struct Client *, struct ConfItem *);
56 void user_welcome(struct Client *source_p);
57
58 char umodebuf[128];
59
60 static int orphaned_umodes = 0;
61 int user_modes[256] = {
62 /* 0x00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x0F */
63 /* 0x10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x1F */
64 /* 0x20 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x2F */
65 /* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x3F */
66 0, /* @ */
67 0, /* A */
68 0, /* B */
69 0, /* C */
70 UMODE_DEAF, /* D */
71 0, /* E */
72 0, /* F */
73 0, /* G */
74 0, /* H */
75 0, /* I */
76 0, /* J */
77 0, /* K */
78 0, /* L */
79 0, /* M */
80 0, /* N */
81 0, /* O */
82 0, /* P */
83 UMODE_NOFORWARD, /* Q */
84 0, /* R */
85 UMODE_SERVICE, /* S */
86 0, /* T */
87 0, /* U */
88 0, /* V */
89 0, /* W */
90 0, /* X */
91 0, /* Y */
92 UMODE_SECURE, /* Z */
93 /* 0x5B */ 0, 0, 0, 0, 0, 0, /* 0x60 */
94 UMODE_ADMIN, /* a */
95 0, /* b */
96 0, /* c */
97 0, /* d */
98 0, /* e */
99 0, /* f */
100 0, /* g */
101 0, /* h */
102 UMODE_INVISIBLE, /* i */
103 0, /* j */
104 0, /* k */
105 UMODE_LOCOPS, /* l */
106 0, /* m */
107 0, /* n */
108 UMODE_OPER, /* o */
109 0, /* p */
110 0, /* q */
111 0, /* r */
112 UMODE_SERVNOTICE, /* s */
113 0, /* t */
114 0, /* u */
115 0, /* v */
116 UMODE_WALLOP, /* w */
117 0, /* x */
118 0, /* y */
119 UMODE_OPERWALL, /* z */
120 /* 0x7B */ 0, 0, 0, 0, 0, /* 0x7F */
121 /* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
122 /* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
123 /* 0xA0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xAF */
124 /* 0xB0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xBF */
125 /* 0xC0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xCF */
126 /* 0xD0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xDF */
127 /* 0xE0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xEF */
128 /* 0xF0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xFF */
129 };
130 /* *INDENT-ON* */
131
132 /*
133 * show_lusers -
134 *
135 * inputs - pointer to client
136 * output -
137 * side effects - display to client user counts etc.
138 */
139 void
140 show_lusers(struct Client *source_p)
141 {
142 if(rb_dlink_list_length(&lclient_list) > (unsigned long)MaxClientCount)
143 MaxClientCount = rb_dlink_list_length(&lclient_list);
144
145 if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) >
146 (unsigned long)MaxConnectionCount)
147 MaxConnectionCount = rb_dlink_list_length(&lclient_list) +
148 rb_dlink_list_length(&serv_list);
149
150 sendto_one_numeric(source_p, RPL_LUSERCLIENT, form_str(RPL_LUSERCLIENT),
151 (Count.total - Count.invisi),
152 Count.invisi,
153 (int)rb_dlink_list_length(&global_serv_list));
154
155 if(rb_dlink_list_length(&oper_list) > 0)
156 sendto_one_numeric(source_p, RPL_LUSEROP,
157 form_str(RPL_LUSEROP),
158 (int)rb_dlink_list_length(&oper_list));
159
160 if(rb_dlink_list_length(&unknown_list) > 0)
161 sendto_one_numeric(source_p, RPL_LUSERUNKNOWN,
162 form_str(RPL_LUSERUNKNOWN),
163 (int)rb_dlink_list_length(&unknown_list));
164
165 if(rb_dlink_list_length(&global_channel_list) > 0)
166 sendto_one_numeric(source_p, RPL_LUSERCHANNELS,
167 form_str(RPL_LUSERCHANNELS),
168 rb_dlink_list_length(&global_channel_list));
169
170 sendto_one_numeric(source_p, RPL_LUSERME, form_str(RPL_LUSERME),
171 (int)rb_dlink_list_length(&lclient_list),
172 (int)rb_dlink_list_length(&serv_list));
173
174 sendto_one_numeric(source_p, RPL_LOCALUSERS,
175 form_str(RPL_LOCALUSERS),
176 (int)rb_dlink_list_length(&lclient_list),
177 Count.max_loc,
178 (int)rb_dlink_list_length(&lclient_list),
179 Count.max_loc);
180
181 sendto_one_numeric(source_p, RPL_GLOBALUSERS, form_str(RPL_GLOBALUSERS),
182 Count.total, Count.max_tot,
183 Count.total, Count.max_tot);
184
185 sendto_one_numeric(source_p, RPL_STATSCONN,
186 form_str(RPL_STATSCONN),
187 MaxConnectionCount, MaxClientCount,
188 Count.totalrestartcount);
189 }
190
191 /* check if we should exit a client due to authd decision
192 * inputs - client server, client connecting
193 * outputs - true if exited, false if not
194 * side effects - messages/exits client if authd rejected and not exempt
195 */
196 static bool
197 authd_check(struct Client *client_p, struct Client *source_p)
198 {
199 struct ConfItem *aconf = source_p->localClient->att_conf;
200 rb_dlink_list varlist = { NULL, NULL, 0 };
201 bool reject = false;
202 char *reason;
203
204 if(source_p->preClient->auth.accepted == true)
205 return reject;
206
207 substitution_append_var(&varlist, "nick", source_p->name);
208 substitution_append_var(&varlist, "ip", source_p->sockhost);
209 substitution_append_var(&varlist, "host", source_p->host);
210 substitution_append_var(&varlist, "dnsbl-host", source_p->preClient->auth.data);
211 substitution_append_var(&varlist, "network-name", ServerInfo.network_name);
212 reason = substitution_parse(source_p->preClient->auth.reason, &varlist);
213
214 switch(source_p->preClient->auth.cause)
215 {
216 case 'B': /* DNSBL */
217 {
218 struct DNSBLEntryStats *stats;
219 char *dnsbl_name = source_p->preClient->auth.data;
220
221 if(dnsbl_stats != NULL)
222 if((stats = rb_dictionary_retrieve(dnsbl_stats, dnsbl_name)) != NULL)
223 stats->hits++;
224
225 if(IsExemptKline(source_p) || IsConfExemptDNSBL(aconf))
226 {
227 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s, but you are exempt",
228 source_p->sockhost, dnsbl_name);
229 break;
230 }
231
232 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
233 "Listed on DNSBL %s: %s (%s@%s) [%s] [%s]",
234 dnsbl_name, source_p->name, source_p->username, source_p->host,
235 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
236 source_p->info);
237
238 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
239 me.name, source_p->name, reason);
240
241 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s",
242 source_p->sockhost, dnsbl_name);
243 add_reject(source_p, NULL, NULL, NULL, "Banned (listed in a DNSBL)");
244 exit_client(client_p, source_p, &me, "Banned (listed in a DNSBL)");
245 reject = true;
246 }
247 break;
248 case 'O': /* OPM */
249 {
250 char *proxy = source_p->preClient->auth.data;
251 char *port = strrchr(proxy, ':');
252
253 if(port == NULL)
254 {
255 /* This shouldn't happen, better tell the ops... */
256 ierror("authd sent us a malformed OPM string %s", proxy);
257 sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
258 "authd sent us a malformed OPM string %s", proxy);
259 break;
260 }
261
262 /* Terminate the proxy type */
263 *(port++) = '\0';
264
265 if(IsExemptKline(source_p) || IsConfExemptProxy(aconf))
266 {
267 sendto_one_notice(source_p,
268 ":*** Your IP address %s has been detected as an open proxy (type %s, port %s), but you are exempt",
269 source_p->sockhost, proxy, port);
270 break;
271 }
272 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
273 "Open proxy %s/%s: %s (%s@%s) [%s] [%s]",
274 proxy, port,
275 source_p->name,
276 source_p->username, source_p->host,
277 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
278 source_p->info);
279
280 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
281 me.name, source_p->name, reason);
282
283 sendto_one_notice(source_p,
284 ":*** Your IP address %s has been detected as an open proxy (type %s, port %s)",
285 source_p->sockhost, proxy, port);
286 add_reject(source_p, NULL, NULL, NULL, "Banned (Open proxy)");
287 exit_client(client_p, source_p, &me, "Banned (Open proxy)");
288 reject = true;
289 }
290 break;
291 default: /* Unknown, but handle the case properly */
292 if(IsExemptKline(source_p))
293 {
294 sendto_one_notice(source_p,
295 ":*** You were rejected, but you are exempt (reason: %s)",
296 reason);
297 break;
298 }
299 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
300 "Rejected by authentication system (reason %s): %s (%s@%s) [%s] [%s]",
301 reason, source_p->name, source_p->username, source_p->host,
302 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
303 source_p->info);
304
305 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
306 me.name, source_p->name, reason);
307
308 sendto_one_notice(source_p, ":*** Rejected by authentication system: %s",
309 reason);
310 add_reject(source_p, NULL, NULL, NULL, "Banned (authentication system)");
311 exit_client(client_p, source_p, &me, "Banned (authentication system)");
312 reject = true;
313 break;
314 }
315
316 if(reject)
317 ServerStats.is_ref++;
318
319 substitution_free(&varlist);
320
321 return reject;
322 }
323
324 /*
325 ** register_local_user
326 ** This function is called when both NICK and USER messages
327 ** have been accepted for the client, in whatever order. Only
328 ** after this, is the USER message propagated.
329 **
330 ** NICK's must be propagated at once when received, although
331 ** it would be better to delay them too until full info is
332 ** available. Doing it is not so simple though, would have
333 ** to implement the following:
334 **
335 ** (actually it has been implemented already for a while) -orabidoo
336 **
337 ** 1) user telnets in and gives only "NICK foobar" and waits
338 ** 2) another user far away logs in normally with the nick
339 ** "foobar" (quite legal, as this server didn't propagate
340 ** it).
341 ** 3) now this server gets nick "foobar" from outside, but
342 ** has alread the same defined locally. Current server
343 ** would just issue "KILL foobar" to clean out dups. But,
344 ** this is not fair. It should actually request another
345 ** nick from local user or kill him/her...
346 */
347 int
348 register_local_user(struct Client *client_p, struct Client *source_p)
349 {
350 struct ConfItem *aconf, *xconf;
351 char tmpstr2[BUFSIZE];
352 char ipaddr[HOSTIPLEN];
353 char myusername[USERLEN+1];
354 int status, umodes;
355
356 s_assert(NULL != source_p);
357 s_assert(MyConnect(source_p));
358
359 if(source_p == NULL)
360 return -1;
361
362 if(IsAnyDead(source_p))
363 return -1;
364
365 if(ConfigFileEntry.ping_cookie)
366 {
367 if(!(source_p->flags & FLAGS_PINGSENT) && source_p->localClient->random_ping == 0)
368 {
369 source_p->localClient->random_ping = (uint32_t)(((rand() * rand()) << 1) | 1);
370 sendto_one(source_p, "PING :%08X",
371 (unsigned int) source_p->localClient->random_ping);
372 source_p->flags |= FLAGS_PINGSENT;
373 return -1;
374 }
375 if(!(source_p->flags & FLAGS_PING_COOKIE))
376 {
377 return -1;
378 }
379 }
380
381 /* hasnt finished client cap negotiation */
382 if(source_p->flags & FLAGS_CLICAP)
383 return -1;
384
385 /* Waiting on authd */
386 if(source_p->preClient->auth.cid)
387 return -1;
388
389 /* Set firsttime here so that post_registration_delay works from registration,
390 * rather than initial connection. */
391 source_p->localClient->firsttime = client_p->localClient->last = rb_current_time();
392
393 /* XXX - fixme. we shouldnt have to build a users buffer twice.. */
394 if(!IsGotId(source_p) && (strchr(source_p->username, '[') != NULL))
395 {
396 const char *p;
397 int i = 0;
398
399 p = source_p->username;
400
401 while(*p && i < USERLEN)
402 {
403 if(*p != '[')
404 myusername[i++] = *p;
405 p++;
406 }
407
408 myusername[i] = '\0';
409 }
410 else
411 rb_strlcpy(myusername, source_p->username, sizeof myusername);
412
413 if((status = check_client(client_p, source_p, myusername)) < 0)
414 return (CLIENT_EXITED);
415
416 /* Apply nick override */
417 if(*source_p->preClient->spoofnick)
418 {
419 char note[NAMELEN + 10];
420
421 del_from_client_hash(source_p->name, source_p);
422 rb_strlcpy(source_p->name, source_p->preClient->spoofnick, NICKLEN + 1);
423 add_to_client_hash(source_p->name, source_p);
424
425 snprintf(note, sizeof(note), "Nick: %s", source_p->name);
426 rb_note(source_p->localClient->F, note);
427 }
428
429 if(!valid_hostname(source_p->host))
430 {
431 const char *illegal_hostname_client_message = ConfigFileEntry.illegal_hostname_client_message;
432
433 if (illegal_hostname_client_message == NULL)
434 illegal_hostname_client_message = "You have an illegal character in your hostname.";
435
436 sendto_one_notice(source_p, ":*** Notice -- %s", illegal_hostname_client_message);
437
438 rb_strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host));
439 }
440
441 aconf = source_p->localClient->att_conf;
442
443 if(aconf == NULL)
444 {
445 const char *not_authorised_client_message = ConfigFileEntry.not_authorised_client_message;
446
447 if (not_authorised_client_message == NULL)
448 not_authorised_client_message = "You are not authorised to access this server.";
449
450 exit_client(client_p, source_p, &me, not_authorised_client_message);
451 return (CLIENT_EXITED);
452 }
453
454 if(IsConfSSLNeeded(aconf) && !IsSecure(source_p))
455 {
456 const char *ssltls_only_client_message = ConfigFileEntry.ssltls_only_client_message;
457
458 if (ssltls_only_client_message == NULL)
459 ssltls_only_client_message = "You need to use SSL/TLS to use this server.";
460
461 ServerStats.is_ref++;
462 sendto_one_notice(source_p, ":*** Notice -- %s", ssltls_only_client_message);
463
464 exit_client(client_p, source_p, &me, ssltls_only_client_message);
465 return (CLIENT_EXITED);
466 }
467
468 if(IsSCTP(source_p) && !IsConfAllowSCTP(aconf))
469 {
470 const char *sctp_forbidden_client_message = ConfigFileEntry.sctp_forbidden_client_message;
471
472 if (sctp_forbidden_client_message == NULL)
473 sctp_forbidden_client_message = "You are not allowed to use SCTP on this server.";
474
475 ServerStats.is_ref++;
476 sendto_one_notice(source_p, ":*** Notice -- %s", sctp_forbidden_client_message);
477
478 exit_client(client_p, source_p, &me, sctp_forbidden_client_message);
479 return (CLIENT_EXITED);
480 }
481
482 if(!IsGotId(source_p))
483 {
484 const char *p;
485 int i = 0;
486
487 if(IsNeedIdentd(aconf))
488 {
489
490 const char *identd_only_client_message = ConfigFileEntry.identd_only_client_message;
491
492 if (identd_only_client_message == NULL)
493 identd_only_client_message = "You need to install identd to use this server.";
494
495 ServerStats.is_ref++;
496 sendto_one_notice(source_p, ":*** Notice -- %s", identd_only_client_message);
497
498 exit_client(client_p, source_p, &me, identd_only_client_message);
499 return (CLIENT_EXITED);
500 }
501
502 /* dont replace username if its supposed to be spoofed --fl */
503 if(!IsConfDoSpoofIp(aconf) || !strchr(aconf->info.name, '@'))
504 {
505 p = myusername;
506
507 if(!IsNoTilde(aconf))
508 source_p->username[i++] = '~';
509
510 while (*p && i < USERLEN)
511 {
512 if(*p != '[')
513 source_p->username[i++] = *p;
514 p++;
515 }
516
517 source_p->username[i] = '\0';
518 }
519 }
520
521 if(IsNeedSasl(aconf) && !*source_p->user->suser)
522 {
523
524 const char *sasl_only_client_message = ConfigFileEntry.sasl_only_client_message;
525
526 if (sasl_only_client_message == NULL)
527 sasl_only_client_message = "You need to identify via SASL to use this server.";
528
529 ServerStats.is_ref++;
530 sendto_one_notice(source_p, ":*** Notice -- %s", sasl_only_client_message);
531
532 exit_client(client_p, source_p, &me, sasl_only_client_message);
533 return (CLIENT_EXITED);
534 }
535
536 /* password check */
537 if(!EmptyString(aconf->passwd))
538 {
539 const char *encr;
540
541 if(EmptyString(source_p->localClient->passwd))
542 encr = "";
543 else if(IsConfEncrypted(aconf))
544 encr = rb_crypt(source_p->localClient->passwd, aconf->passwd);
545 else
546 encr = source_p->localClient->passwd;
547
548 if(encr == NULL || strcmp(encr, aconf->passwd))
549 {
550 ServerStats.is_ref++;
551 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), me.name, source_p->name);
552 exit_client(client_p, source_p, &me, "Bad Password");
553 return (CLIENT_EXITED);
554 }
555
556 /* clear password only if used now, otherwise send it
557 * to services -- jilles */
558 if(source_p->localClient->passwd)
559 {
560 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
561 rb_free(source_p->localClient->passwd);
562 source_p->localClient->passwd = NULL;
563 }
564 }
565
566 /* report and set flags (kline exempt etc.) as needed in source_p */
567 report_and_set_user_flags(source_p, aconf);
568
569 /* Limit clients */
570 /*
571 * We want to be able to have servers and F-line clients
572 * connect, so save room for "buffer" connections.
573 * Smaller servers may want to decrease this, and it should
574 * probably be just a percentage of the MAXCLIENTS...
575 * -Taner
576 */
577 /* Except "F:" clients */
578 if(rb_dlink_list_length(&lclient_list) >=
579 (unsigned long)GlobalSetOptions.maxclients && !IsConfExemptLimits(aconf))
580 {
581 sendto_realops_snomask(SNO_FULL, L_NETWIDE,
582 "Too many clients, rejecting %s[%s].", source_p->name, source_p->host);
583
584 const char *server_full_client_message = ConfigFileEntry.server_full_client_message;
585
586 if (server_full_client_message == NULL)
587 server_full_client_message = "Sorry, server is full - try later";
588
589 ServerStats.is_ref++;
590 exit_client(client_p, source_p, &me, server_full_client_message);
591 return (CLIENT_EXITED);
592 }
593
594 /* kline exemption extends to xline too */
595 if(!IsExemptKline(source_p) &&
596 (xconf = find_xline(source_p->info, 1)) != NULL)
597 {
598 ServerStats.is_ref++;
599 sendto_realops_snomask(SNO_BANNED, L_NETWIDE,
600 "Rejecting X-Lined user %s [%s] (%s)", get_client_name(source_p, HIDE_IP),
601 show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255", xconf->host);
602
603 add_reject(source_p, xconf->host, NULL, NULL, NULL);
604 exit_client(client_p, source_p, &me, "Bad user info");
605 return CLIENT_EXITED;
606 }
607
608 /* authd rejection check */
609 if(authd_check(client_p, source_p))
610 return CLIENT_EXITED;
611
612 /* valid user name check */
613
614 if(!valid_username(source_p->username))
615 {
616 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
617 "Invalid username: %s (%s@%s)",
618 source_p->name, source_p->username, source_p->host);
619
620 const char *illegal_name_long_client_message = ConfigFileEntry.illegal_name_long_client_message;
621 const char *illegal_name_short_client_message = ConfigFileEntry.illegal_name_short_client_message;
622
623 if (illegal_name_long_client_message == NULL)
624 illegal_name_long_client_message = "Your username is invalid. Please make sure that your username contains "
625 "only alphanumeric characters.";
626 if (illegal_name_short_client_message == NULL)
627 illegal_name_short_client_message = "Invalid username";
628
629 ServerStats.is_ref++;
630 sendto_one_notice(source_p, ":*** %s", illegal_name_long_client_message);
631 sprintf(tmpstr2, "%s [%s]", illegal_name_short_client_message, source_p->username);
632 exit_client(client_p, source_p, &me, tmpstr2);
633 return (CLIENT_EXITED);
634 }
635
636 /* end of valid user name check */
637
638 /* Store original hostname -- jilles */
639 rb_strlcpy(source_p->orighost, source_p->host, HOSTLEN + 1);
640
641 /* Spoof user@host */
642 if(*source_p->preClient->spoofuser)
643 rb_strlcpy(source_p->username, source_p->preClient->spoofuser, USERLEN + 1);
644 if(*source_p->preClient->spoofhost)
645 {
646 rb_strlcpy(source_p->host, source_p->preClient->spoofhost, HOSTLEN + 1);
647 if (irccmp(source_p->host, source_p->orighost))
648 SetDynSpoof(source_p);
649 }
650
651 umodes = ConfigFileEntry.default_umodes & ~aconf->umodes_mask;
652 umodes |= aconf->umodes;
653 umodes &= ~ConfigFileEntry.oper_only_umodes;
654 umodes &= ~orphaned_umodes;
655 source_p->umodes |= umodes;
656
657 call_hook(h_new_local_user, source_p);
658
659 /* If they have died in send_* or were thrown out by the
660 * new_local_user hook don't do anything. */
661 if(IsAnyDead(source_p))
662 return CLIENT_EXITED;
663
664 /* To avoid inconsistencies, do not abort the registration
665 * starting from this point -- jilles
666 */
667 rb_inet_ntop_sock((struct sockaddr *)&source_p->localClient->ip, ipaddr, sizeof(ipaddr));
668
669 sendto_realops_snomask(SNO_CCONN, L_ALL,
670 "Client connecting: %s (%s@%s) [%s] {%s} <%s> [%s]",
671 source_p->name, source_p->username, source_p->orighost,
672 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
673 get_client_class(source_p),
674 *source_p->user->suser ? source_p->user->suser : "*",
675 source_p->info);
676
677 sendto_realops_snomask(SNO_CCONNEXT, L_ALL,
678 "CLICONN %s %s %s %s %s %s 0 %s %s",
679 source_p->name, source_p->username, source_p->orighost,
680 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
681 get_client_class(source_p),
682 /* mirc can sometimes send ips here */
683 show_ip(NULL, source_p) ? source_p->localClient->fullcaps : "<hidden> <hidden>",
684 *source_p->user->suser ? source_p->user->suser : "*",
685 source_p->info);
686
687 add_to_hostname_hash(source_p->orighost, source_p);
688
689 /* Allocate a UID if it was not previously allocated.
690 * If this already occured, it was probably during SASL auth...
691 */
692 if(!*source_p->id)
693 {
694 rb_strlcpy(source_p->id, generate_uid(), sizeof(source_p->id));
695 add_to_id_hash(source_p->id, source_p);
696 }
697
698 if (IsSecure(source_p))
699 source_p->umodes |= UMODE_SECURE;
700
701 if (source_p->umodes & UMODE_INVISIBLE)
702 Count.invisi++;
703
704 s_assert(!IsClient(source_p));
705 rb_dlinkMoveNode(&source_p->localClient->tnode, &unknown_list, &lclient_list);
706 SetClient(source_p);
707
708 source_p->servptr = &me;
709 rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users);
710
711 /* Increment our total user count here */
712 if(++Count.total > Count.max_tot)
713 Count.max_tot = Count.total;
714
715 Count.totalrestartcount++;
716
717 s_assert(source_p->localClient != NULL);
718
719 if(rb_dlink_list_length(&lclient_list) > (unsigned long)Count.max_loc)
720 {
721 Count.max_loc = rb_dlink_list_length(&lclient_list);
722 if(!(Count.max_loc % 10))
723 sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
724 "New Max Local Clients: %d", Count.max_loc);
725 }
726
727 /* they get a reduced limit */
728 if(find_tgchange(source_p->sockhost))
729 source_p->localClient->targets_free = TGCHANGE_INITIAL_LOW;
730 else
731 source_p->localClient->targets_free = TGCHANGE_INITIAL;
732
733 monitor_signon(source_p);
734 user_welcome(source_p);
735
736 free_pre_client(source_p);
737
738 introduce_client(client_p, source_p, source_p->user, source_p->name, 1);
739 return 0;
740 }
741
742 /*
743 * introduce_clients
744 *
745 * inputs -
746 * output -
747 * side effects - This common function introduces a client to the rest
748 * of the net, either from a local client connect or
749 * from a remote connect.
750 */
751 void
752 introduce_client(struct Client *client_p, struct Client *source_p, struct User *user, const char *nick, int use_euid)
753 {
754 char ubuf[BUFSIZE];
755 struct Client *identifyservice_p;
756 char *p;
757 hook_data_umode_changed hdata;
758 hook_data_client hdata2;
759
760 if(MyClient(source_p))
761 send_umode(source_p, source_p, 0, ubuf);
762 else
763 send_umode(NULL, source_p, 0, ubuf);
764
765 if(!*ubuf)
766 {
767 ubuf[0] = '+';
768 ubuf[1] = '\0';
769 }
770
771 s_assert(has_id(source_p));
772
773 if (use_euid)
774 sendto_server(client_p, NULL, CAP_EUID | CAP_TS6, NOCAPS,
775 ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
776 source_p->servptr->id, nick,
777 source_p->hopcount + 1,
778 (long) source_p->tsinfo, ubuf,
779 source_p->username, source_p->host,
780 IsIPSpoof(source_p) ? "0" : source_p->sockhost,
781 source_p->id,
782 IsDynSpoof(source_p) ? source_p->orighost : "*",
783 EmptyString(source_p->user->suser) ? "*" : source_p->user->suser,
784 source_p->info);
785
786 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS,
787 ":%s UID %s %d %ld %s %s %s %s %s :%s",
788 source_p->servptr->id, nick,
789 source_p->hopcount + 1,
790 (long) source_p->tsinfo, ubuf,
791 source_p->username, source_p->host,
792 IsIPSpoof(source_p) ? "0" : source_p->sockhost,
793 source_p->id, source_p->info);
794
795 if(!EmptyString(source_p->certfp))
796 sendto_server(client_p, NULL, CAP_TS6, NOCAPS,
797 ":%s ENCAP * CERTFP :%s",
798 use_id(source_p), source_p->certfp);
799
800 if (IsDynSpoof(source_p))
801 {
802 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * REALHOST %s",
803 use_id(source_p), source_p->orighost);
804 }
805
806 if (!EmptyString(source_p->user->suser))
807 {
808 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * LOGIN %s",
809 use_id(source_p), source_p->user->suser);
810 }
811
812 if(MyConnect(source_p) && source_p->localClient->passwd)
813 {
814 if (!EmptyString(ConfigFileEntry.identifyservice) &&
815 !EmptyString(ConfigFileEntry.identifycommand))
816 {
817 /* use user@server */
818 p = strchr(ConfigFileEntry.identifyservice, '@');
819 if (p != NULL)
820 identifyservice_p = find_named_client(p + 1);
821 else
822 identifyservice_p = NULL;
823 if (identifyservice_p != NULL)
824 {
825 if (!EmptyString(source_p->localClient->auth_user))
826 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s %s",
827 get_id(source_p, identifyservice_p),
828 ConfigFileEntry.identifyservice,
829 ConfigFileEntry.identifycommand,
830 source_p->localClient->auth_user,
831 source_p->localClient->passwd);
832 else
833 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s",
834 get_id(source_p, identifyservice_p),
835 ConfigFileEntry.identifyservice,
836 ConfigFileEntry.identifycommand,
837 source_p->localClient->passwd);
838 }
839 }
840 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
841 rb_free(source_p->localClient->passwd);
842 source_p->localClient->passwd = NULL;
843 }
844
845 /* let modules providing usermodes know that we've got a new user,
846 * why is this here? -- well, some modules need to be able to send out new
847 * information about a client, so this was the best place to do it
848 * --nenolod
849 */
850 hdata.client = source_p;
851 hdata.oldumodes = 0;
852 hdata.oldsnomask = 0;
853 call_hook(h_umode_changed, &hdata);
854
855 /* On the other hand, some modules need to know when a client is
856 * being introduced, period.
857 * --gxti
858 */
859 hdata2.client = client_p;
860 hdata2.target = source_p;
861 call_hook(h_introduce_client, &hdata2);
862 }
863
864 /*
865 * valid_hostname - check hostname for validity
866 *
867 * Inputs - pointer to user
868 * Output - true if valid, false if not
869 * Side effects - NONE
870 *
871 * NOTE: this doesn't allow a hostname to begin with a dot and
872 * will not allow more dots than chars.
873 */
874 bool
875 valid_hostname(const char *hostname)
876 {
877 const char *p = hostname, *last_slash = 0;
878 int found_sep = 0;
879
880 s_assert(NULL != p);
881
882 if(hostname == NULL)
883 return false;
884
885 if(!strcmp(hostname, "localhost"))
886 return true;
887
888 if('.' == *p || ':' == *p || '/' == *p)
889 return false;
890
891 while (*p)
892 {
893 if(!IsHostChar(*p))
894 return false;
895 if(*p == '.' || *p == ':')
896 found_sep++;
897 else if(*p == '/')
898 {
899 found_sep++;
900 last_slash = p;
901 }
902 p++;
903 }
904
905 if(found_sep == 0)
906 return false;
907
908 if(last_slash && IsDigit(last_slash[1]))
909 return false;
910
911 return true;
912 }
913
914 /*
915 * valid_username - check username for validity
916 *
917 * Inputs - pointer to user
918 * Output - true if valid, false if not
919 * Side effects - NONE
920 *
921 * Absolutely always reject any '*' '!' '?' '@' in an user name
922 * reject any odd control characters names.
923 * Allow '.' in username to allow for "first.last"
924 * style of username
925 */
926 bool
927 valid_username(const char *username)
928 {
929 int dots = 0;
930 const char *p = username;
931
932 s_assert(NULL != p);
933
934 if(username == NULL)
935 return false;
936
937 if('~' == *p)
938 ++p;
939
940 /* reject usernames that don't start with an alphanum
941 * i.e. reject jokers who have '-@somehost' or '.@somehost'
942 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
943 */
944 if(!IsAlNum(*p))
945 return false;
946
947 while (*++p)
948 {
949 if((*p == '.') && ConfigFileEntry.dots_in_ident)
950 {
951 dots++;
952 if(dots > ConfigFileEntry.dots_in_ident)
953 return false;
954 if(!IsUserChar(p[1]))
955 return false;
956 }
957 else if(!IsUserChar(*p))
958 return false;
959 }
960 return true;
961 }
962
963 /* report_and_set_user_flags
964 *
965 * Inputs - pointer to source_p
966 * - pointer to aconf for this user
967 * Output - NONE
968 * Side effects -
969 * Report to user any special flags they are getting, and set them.
970 */
971
972 static void
973 report_and_set_user_flags(struct Client *source_p, struct ConfItem *aconf)
974 {
975 /* If this user is being spoofed, tell them so */
976 if(IsConfDoSpoofIp(aconf))
977 {
978 sendto_one_notice(source_p, ":*** Spoofing your IP");
979 }
980
981 /* If this user is in the exception class, Set it "E lined" */
982 if(IsConfExemptKline(aconf))
983 {
984 SetExemptKline(source_p);
985 sendto_one_notice(source_p, ":*** You are exempt from K/X lines");
986 }
987
988 if(IsConfExemptDNSBL(aconf))
989 /* kline exempt implies this, don't send both */
990 if(!IsConfExemptKline(aconf))
991 sendto_one_notice(source_p, ":*** You are exempt from DNSBL listings");
992
993 /* If this user is exempt from user limits set it F lined" */
994 if(IsConfExemptLimits(aconf))
995 {
996 sendto_one_notice(source_p, ":*** You are exempt from user limits");
997 }
998
999 if(IsConfExemptFlood(aconf))
1000 {
1001 SetExemptFlood(source_p);
1002 sendto_one_notice(source_p, ":*** You are exempt from flood limits");
1003 }
1004
1005 if(IsConfExemptSpambot(aconf))
1006 {
1007 SetExemptSpambot(source_p);
1008 sendto_one_notice(source_p, ":*** You are exempt from spambot checks");
1009 }
1010
1011 if(IsConfExemptJupe(aconf))
1012 {
1013 SetExemptJupe(source_p);
1014 sendto_one_notice(source_p, ":*** You are exempt from juped channel warnings");
1015 }
1016
1017 if(IsConfExemptResv(aconf))
1018 {
1019 SetExemptResv(source_p);
1020 sendto_one_notice(source_p, ":*** You are exempt from resvs");
1021 }
1022
1023 if(IsConfExemptShide(aconf))
1024 {
1025 SetExemptShide(source_p);
1026 sendto_one_notice(source_p, ":*** You are exempt from serverhiding");
1027 }
1028
1029 if(IsConfExtendChans(aconf))
1030 {
1031 SetExtendChans(source_p);
1032 sendto_one_notice(source_p, ":*** You are exempt from normal channel limits");
1033 }
1034 }
1035
1036 void
1037 report_priv_change(struct Client *client, struct PrivilegeSet *old, struct PrivilegeSet *new)
1038 {
1039 struct privset_diff diff = privilegeset_diff(old, new);
1040
1041 hook_data_priv_change hdata = {
1042 .client = client,
1043 .new = new,
1044 .old = old,
1045 .unchanged = diff.unchanged,
1046 .added = diff.added,
1047 .removed = diff.removed,
1048 };
1049 call_hook(h_priv_change, &hdata);
1050 }
1051
1052 static void
1053 show_other_user_mode(struct Client *source_p, struct Client *target_p)
1054 {
1055 int i;
1056 char buf[BUFSIZE];
1057 char *m;
1058
1059 m = buf;
1060 *m++ = '+';
1061
1062 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
1063 if (target_p->umodes & user_modes[i])
1064 *m++ = (char) i;
1065 *m = '\0';
1066
1067 if (MyConnect(target_p) && target_p->snomask != 0)
1068 sendto_one_notice(source_p, ":Modes for %s are %s %s",
1069 target_p->name, buf,
1070 construct_snobuf(target_p->snomask));
1071 else
1072 sendto_one_notice(source_p, ":Modes for %s are %s",
1073 target_p->name, buf);
1074 }
1075
1076 /*
1077 * user_mode - set get current users mode
1078 *
1079 * m_umode() added 15/10/91 By Darren Reed.
1080 * parv[1] - username to change mode for
1081 * parv[2] - modes to change
1082 */
1083 int
1084 user_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
1085 {
1086 int flag;
1087 int i;
1088 char *m;
1089 const char *pm;
1090 struct Client *target_p;
1091 int what, setflags;
1092 bool badflag = false; /* Only send one bad flag notice */
1093 bool showsnomask = false;
1094 unsigned int setsnomask;
1095 char buf[BUFSIZE];
1096 hook_data_umode_changed hdata;
1097
1098 what = MODE_ADD;
1099
1100 if(parc < 2)
1101 {
1102 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), me.name, source_p->name, "MODE");
1103 return 0;
1104 }
1105
1106 if((target_p = MyClient(source_p) ? find_named_person(parv[1]) : find_person(parv[1])) == NULL)
1107 {
1108 if(MyConnect(source_p))
1109 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
1110 form_str(ERR_NOSUCHCHANNEL), parv[1]);
1111 return 0;
1112 }
1113
1114 /* Dont know why these were commented out..
1115 * put them back using new sendto() funcs
1116 */
1117
1118 if(IsServer(source_p))
1119 {
1120 sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
1121 "*** Mode for User %s from %s", parv[1], source_p->name);
1122 return 0;
1123 }
1124
1125 if(source_p != target_p)
1126 {
1127 if (HasPrivilege(source_p, "auspex:umodes") && parc < 3)
1128 show_other_user_mode(source_p, target_p);
1129 else
1130 sendto_one(source_p, form_str(ERR_USERSDONTMATCH), me.name, source_p->name);
1131 return 0;
1132 }
1133
1134 if(parc < 3)
1135 {
1136 m = buf;
1137 *m++ = '+';
1138
1139 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
1140 if (source_p->umodes & user_modes[i])
1141 *m++ = (char) i;
1142
1143 *m = '\0';
1144 sendto_one_numeric(source_p, RPL_UMODEIS, form_str(RPL_UMODEIS), buf);
1145
1146 if (source_p->snomask != 0)
1147 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1148 construct_snobuf(source_p->snomask));
1149
1150 return 0;
1151 }
1152
1153 /* find flags already set for user */
1154 setflags = source_p->umodes;
1155 setsnomask = source_p->snomask;
1156
1157 /*
1158 * parse mode change string(s)
1159 */
1160 for (pm = parv[2]; *pm; pm++)
1161 switch (*pm)
1162 {
1163 case '+':
1164 what = MODE_ADD;
1165 break;
1166 case '-':
1167 what = MODE_DEL;
1168 break;
1169
1170 case 'o':
1171 if(what == MODE_ADD)
1172 {
1173 if(IsServer(client_p) && !IsOper(source_p))
1174 {
1175 ++Count.oper;
1176 SetOper(source_p);
1177 rb_dlinkAddAlloc(source_p, &oper_list);
1178 }
1179 }
1180 else
1181 {
1182 /* Only decrement the oper counts if an oper to begin with
1183 * found by Pat Szuta, Perly , perly@xnet.com
1184 */
1185
1186 if(!IsOper(source_p))
1187 break;
1188
1189 ClearOper(source_p);
1190
1191 Count.oper--;
1192
1193 if(MyConnect(source_p))
1194 {
1195 source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
1196 source_p->flags &= ~OPER_FLAGS;
1197
1198 rb_dlinkFindDestroy(source_p, &local_oper_list);
1199 }
1200
1201 if(source_p->user->opername != NULL)
1202 {
1203 rb_free(source_p->user->opername);
1204 source_p->user->opername = NULL;
1205 }
1206
1207 if(source_p->user->privset != NULL)
1208 {
1209 report_priv_change(source_p, source_p->user->privset, NULL);
1210
1211 privilegeset_unref(source_p->user->privset);
1212 source_p->user->privset = NULL;
1213 }
1214
1215 rb_dlinkFindDestroy(source_p, &oper_list);
1216 }
1217 break;
1218
1219 /* we may not get these,
1220 * but they shouldnt be in default
1221 */
1222
1223 /* can only be set on burst */
1224 case 'S':
1225 case 'Z':
1226 case ' ':
1227 case '\n':
1228 case '\r':
1229 case '\t':
1230 break;
1231
1232 case 's':
1233 if (MyConnect(source_p))
1234 {
1235 if((ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE) &&
1236 (!IsOper(source_p) || !HasPrivilege(source_p, "usermode:servnotice")))
1237 {
1238 if (what == MODE_ADD || source_p->umodes & UMODE_SERVNOTICE)
1239 badflag = true;
1240 continue;
1241 }
1242 showsnomask = true;
1243 if(what == MODE_ADD)
1244 {
1245 if (parc > 3)
1246 source_p->snomask = parse_snobuf_to_mask(source_p->snomask, parv[3]);
1247 else
1248 source_p->snomask |= SNO_GENERAL;
1249 }
1250 else
1251 source_p->snomask = 0;
1252 if (source_p->snomask != 0)
1253 source_p->umodes |= UMODE_SERVNOTICE;
1254 else
1255 source_p->umodes &= ~UMODE_SERVNOTICE;
1256 break;
1257 }
1258 /* FALLTHROUGH */
1259 default:
1260 if (MyConnect(source_p) && *pm == 'Q' && !ConfigChannel.use_forward)
1261 {
1262 badflag = true;
1263 break;
1264 }
1265
1266 if((flag = user_modes[(unsigned char) *pm]))
1267 {
1268 if(MyConnect(source_p)
1269 && ((!IsOper(source_p)
1270 && (ConfigFileEntry.oper_only_umodes & flag))
1271 || (orphaned_umodes & flag)))
1272 {
1273 if (what == MODE_ADD || source_p->umodes & flag)
1274 badflag = true;
1275 }
1276 else
1277 {
1278 if(what == MODE_ADD)
1279 source_p->umodes |= flag;
1280 else
1281 source_p->umodes &= ~flag;
1282 }
1283 }
1284 else
1285 {
1286 if(MyConnect(source_p))
1287 badflag = true;
1288 }
1289 break;
1290 }
1291
1292 if(badflag)
1293 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG), me.name, source_p->name);
1294
1295 if(MyClient(source_p))
1296 {
1297 if ((ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE) &&
1298 !HasPrivilege(source_p, "usermode:servnotice"))
1299 source_p->umodes &= ~UMODE_SERVNOTICE;
1300 if (!(source_p->umodes & UMODE_SERVNOTICE) && source_p->snomask != 0)
1301 {
1302 source_p->snomask = 0;
1303 showsnomask = true;
1304 }
1305 }
1306
1307 if(MyClient(source_p) && (source_p->snomask & SNO_NCHANGE) && !IsOperN(source_p))
1308 {
1309 sendto_one_notice(source_p, ":*** You need oper and nick_changes flag for +s +n");
1310 source_p->snomask &= ~SNO_NCHANGE; /* only tcm's really need this */
1311 }
1312
1313 if(MyClient(source_p) && (source_p->umodes & UMODE_OPERWALL) && !IsOperOperwall(source_p))
1314 {
1315 sendto_one_notice(source_p, ":*** You need oper and operwall flag for +z");
1316 source_p->umodes &= ~UMODE_OPERWALL;
1317 }
1318
1319 if(MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
1320 (!IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p)))
1321 {
1322 sendto_one_notice(source_p, ":*** You need oper and admin flag for +a");
1323 source_p->umodes &= ~UMODE_ADMIN;
1324 }
1325
1326 if(MyClient(source_p))
1327 source_p->handler = IsOperGeneral(source_p) ? OPER_HANDLER : CLIENT_HANDLER;
1328
1329 /* let modules providing usermodes know that we've changed our usermode --nenolod */
1330 hdata.client = source_p;
1331 hdata.oldumodes = setflags;
1332 hdata.oldsnomask = setsnomask;
1333 call_hook(h_umode_changed, &hdata);
1334
1335 if(!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
1336 ++Count.invisi;
1337 if((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
1338 --Count.invisi;
1339 /*
1340 * compare new flags with old flags and send string which
1341 * will cause servers to update correctly.
1342 */
1343 send_umode_out(client_p, source_p, setflags);
1344 if (showsnomask && MyConnect(source_p))
1345 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1346 construct_snobuf(source_p->snomask));
1347
1348 return (0);
1349 }
1350
1351 /*
1352 * send the MODE string for user (user) to connection client_p
1353 * -avalon
1354 */
1355 void
1356 send_umode(struct Client *client_p, struct Client *source_p, int old, char *umode_buf)
1357 {
1358 int i;
1359 int flag;
1360 char *m;
1361 int what = 0;
1362
1363 /*
1364 * build a string in umode_buf to represent the change in the user's
1365 * mode between the new (source_p->flag) and 'old'.
1366 */
1367 m = umode_buf;
1368 *m = '\0';
1369
1370 for (i = 0; i < 128; i++)
1371 {
1372 flag = user_modes[i];
1373
1374 if((flag & old) && !(source_p->umodes & flag))
1375 {
1376 if(what == MODE_DEL)
1377 *m++ = (char) i;
1378 else
1379 {
1380 what = MODE_DEL;
1381 *m++ = '-';
1382 *m++ = (char) i;
1383 }
1384 }
1385 else if(!(flag & old) && (source_p->umodes & flag))
1386 {
1387 if(what == MODE_ADD)
1388 *m++ = (char) i;
1389 else
1390 {
1391 what = MODE_ADD;
1392 *m++ = '+';
1393 *m++ = (char) i;
1394 }
1395 }
1396 }
1397 *m = '\0';
1398
1399 if(*umode_buf && client_p)
1400 sendto_one(client_p, ":%s MODE %s :%s", source_p->name, source_p->name, umode_buf);
1401 }
1402
1403 /*
1404 * send_umode_out
1405 *
1406 * inputs -
1407 * output - NONE
1408 * side effects -
1409 */
1410 void
1411 send_umode_out(struct Client *client_p, struct Client *source_p, int old)
1412 {
1413 struct Client *target_p;
1414 char buf[BUFSIZE];
1415 rb_dlink_node *ptr;
1416
1417 send_umode(NULL, source_p, old, buf);
1418
1419 RB_DLINK_FOREACH(ptr, serv_list.head)
1420 {
1421 target_p = ptr->data;
1422
1423 if((target_p != client_p) && (target_p != source_p) && (*buf))
1424 {
1425 sendto_one(target_p, ":%s MODE %s :%s",
1426 get_id(source_p, target_p),
1427 get_id(source_p, target_p), buf);
1428 }
1429 }
1430
1431 if(client_p && MyClient(client_p))
1432 send_umode(client_p, source_p, old, buf);
1433 }
1434
1435 /*
1436 * user_welcome
1437 *
1438 * inputs - client pointer to client to welcome
1439 * output - NONE
1440 * side effects -
1441 */
1442 void
1443 user_welcome(struct Client *source_p)
1444 {
1445 sendto_one_numeric(source_p, RPL_WELCOME, form_str(RPL_WELCOME), ServerInfo.network_name, source_p->name);
1446 sendto_one_numeric(source_p, RPL_YOURHOST, form_str(RPL_YOURHOST),
1447 get_listener_name(source_p->localClient->listener), ircd_version);
1448 sendto_one_numeric(source_p, RPL_CREATED, form_str(RPL_CREATED), creation);
1449 sendto_one_numeric(source_p, RPL_MYINFO, form_str(RPL_MYINFO), me.name, ircd_version, umodebuf, cflagsmyinfo);
1450
1451 show_isupport(source_p);
1452
1453 show_lusers(source_p);
1454
1455 if(ConfigFileEntry.short_motd)
1456 {
1457 sendto_one_notice(source_p, ":*** Notice -- motd was last changed at %s", user_motd_changed);
1458 sendto_one_notice(source_p, ":*** Notice -- Please read the motd if you haven't read it");
1459
1460 sendto_one(source_p, form_str(RPL_MOTDSTART),
1461 me.name, source_p->name, me.name);
1462
1463 sendto_one(source_p, form_str(RPL_MOTD),
1464 me.name, source_p->name, "*** This is the short motd ***");
1465
1466 sendto_one(source_p, form_str(RPL_ENDOFMOTD), me.name, source_p->name);
1467 }
1468 else
1469 send_user_motd(source_p);
1470 }
1471
1472 /* oper_up()
1473 *
1474 * inputs - pointer to given client to oper
1475 * - pointer to ConfItem to use
1476 * output - none
1477 * side effects - opers up source_p using aconf for reference
1478 */
1479 void
1480 oper_up(struct Client *source_p, struct oper_conf *oper_p)
1481 {
1482 unsigned int old = source_p->umodes, oldsnomask = source_p->snomask;
1483 hook_data_umode_changed hdata;
1484
1485 SetOper(source_p);
1486
1487 if(oper_p->umodes)
1488 source_p->umodes |= oper_p->umodes;
1489 else if(ConfigFileEntry.oper_umodes)
1490 source_p->umodes |= ConfigFileEntry.oper_umodes;
1491 else
1492 source_p->umodes |= DEFAULT_OPER_UMODES;
1493
1494 if (oper_p->snomask)
1495 {
1496 source_p->snomask |= oper_p->snomask;
1497 source_p->umodes |= UMODE_SERVNOTICE;
1498 }
1499 else if (source_p->umodes & UMODE_SERVNOTICE)
1500 {
1501 /* Only apply these if +s is already set -- jilles */
1502 if (ConfigFileEntry.oper_snomask)
1503 source_p->snomask |= ConfigFileEntry.oper_snomask;
1504 else
1505 source_p->snomask |= DEFAULT_OPER_SNOMASK;
1506 }
1507
1508 Count.oper++;
1509
1510 SetExtendChans(source_p);
1511 SetExemptKline(source_p);
1512
1513 source_p->flags |= oper_p->flags;
1514 source_p->user->opername = rb_strdup(oper_p->name);
1515 source_p->user->privset = privilegeset_ref(oper_p->privset);
1516
1517 report_priv_change(source_p, NULL, source_p->user->privset);
1518
1519 rb_dlinkAddAlloc(source_p, &local_oper_list);
1520 rb_dlinkAddAlloc(source_p, &oper_list);
1521
1522 if(IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
1523 source_p->umodes |= UMODE_ADMIN;
1524 if(!IsOperN(source_p))
1525 source_p->snomask &= ~SNO_NCHANGE;
1526 if(!IsOperOperwall(source_p))
1527 source_p->umodes &= ~UMODE_OPERWALL;
1528 if((ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE) &&
1529 !HasPrivilege(source_p, "usermode:servnotice"))
1530 {
1531 source_p->umodes &= ~UMODE_SERVNOTICE;
1532 source_p->snomask = 0;
1533 }
1534 hdata.client = source_p;
1535 hdata.oldumodes = old;
1536 hdata.oldsnomask = oldsnomask;
1537 call_hook(h_umode_changed, &hdata);
1538
1539 source_p->handler = IsOperGeneral(source_p) ? OPER_HANDLER : CLIENT_HANDLER;
1540
1541 sendto_realops_snomask(SNO_GENERAL, L_ALL,
1542 "%s (%s!%s@%s) is now an operator", oper_p->name, source_p->name,
1543 source_p->username, source_p->host);
1544 sendto_server(NULL, NULL, CAP_TS6, NOCAPS, ":%s OPER %s %s",
1545 use_id(source_p), oper_p->name, oper_p->privset->name);
1546 if(!(old & UMODE_INVISIBLE) && IsInvisible(source_p))
1547 ++Count.invisi;
1548 if((old & UMODE_INVISIBLE) && !IsInvisible(source_p))
1549 --Count.invisi;
1550 send_umode_out(source_p, source_p, old);
1551 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1552 construct_snobuf(source_p->snomask));
1553 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1554 sendto_one_notice(source_p, ":*** Oper privilege set is %s", oper_p->privset->name);
1555 send_multiline_init(source_p, " ", ":%s NOTICE %s :*** Oper privs are ", me.name, source_p->name);
1556 for (const char *const *s = privilegeset_privs(oper_p->privset); *s != NULL; s++)
1557 send_multiline_item(source_p, "%s", *s);
1558 send_multiline_fini(source_p, NULL);
1559 send_oper_motd(source_p);
1560 }
1561
1562 /*
1563 * find_umode_slot
1564 *
1565 * inputs - NONE
1566 * outputs - an available umode bitmask or
1567 * 0 if no umodes are available
1568 * side effects - NONE
1569 */
1570 unsigned int
1571 find_umode_slot(void)
1572 {
1573 unsigned int all_umodes = 0, my_umode = 0, i;
1574
1575 for (i = 0; i < 128; i++)
1576 all_umodes |= user_modes[i];
1577
1578 for (my_umode = 1; my_umode && (all_umodes & my_umode);
1579 my_umode <<= 1);
1580
1581 return my_umode;
1582 }
1583
1584 void
1585 construct_umodebuf(void)
1586 {
1587 int i;
1588 char *ptr = umodebuf;
1589 static int prev_user_modes[128];
1590
1591 *ptr = '\0';
1592
1593 for (i = 0; i < 128; i++)
1594 {
1595 if (prev_user_modes[i] != 0 && prev_user_modes[i] != user_modes[i])
1596 {
1597 if (user_modes[i] == 0)
1598 {
1599 orphaned_umodes |= prev_user_modes[i];
1600 sendto_realops_snomask(SNO_DEBUG, L_NETWIDE, "Umode +%c is now orphaned", i);
1601 }
1602 else
1603 {
1604 orphaned_umodes &= ~prev_user_modes[i];
1605 sendto_realops_snomask(SNO_DEBUG, L_NETWIDE, "Orphaned umode +%c is picked up by module", i);
1606 }
1607 user_modes[i] = prev_user_modes[i];
1608 }
1609 else
1610 prev_user_modes[i] = user_modes[i];
1611 if (user_modes[i])
1612 *ptr++ = (char) i;
1613 }
1614
1615 *ptr++ = '\0';
1616 }
1617
1618 void
1619 change_nick_user_host(struct Client *target_p, const char *nick, const char *user,
1620 const char *host, int newts, const char *format, ...)
1621 {
1622 rb_dlink_node *ptr;
1623 struct Channel *chptr;
1624 struct membership *mscptr;
1625 int changed = irccmp(target_p->name, nick);
1626 int changed_case = strcmp(target_p->name, nick);
1627 int do_qjm = irccmp(target_p->username, user) || irccmp(target_p->host, host);
1628 char mode[10], modeval[NICKLEN * 2 + 2], reason[256], *mptr;
1629 va_list ap;
1630
1631 modeval[0] = '\0';
1632
1633 if(changed)
1634 {
1635 target_p->tsinfo = newts;
1636 monitor_signoff(target_p);
1637 }
1638 invalidate_bancache_user(target_p);
1639
1640 if(do_qjm)
1641 {
1642 va_start(ap, format);
1643 vsnprintf(reason, sizeof reason, format, ap);
1644 va_end(ap);
1645
1646 sendto_common_channels_local_butone(target_p, NOCAPS, CLICAP_CHGHOST, ":%s!%s@%s QUIT :%s",
1647 target_p->name, target_p->username, target_p->host,
1648 reason);
1649
1650 RB_DLINK_FOREACH(ptr, target_p->user->channel.head)
1651 {
1652 mscptr = ptr->data;
1653 chptr = mscptr->chptr;
1654 mptr = mode;
1655
1656 if(is_chanop(mscptr))
1657 {
1658 *mptr++ = 'o';
1659 strcat(modeval, nick);
1660 strcat(modeval, " ");
1661 }
1662
1663 if(is_voiced(mscptr))
1664 {
1665 *mptr++ = 'v';
1666 strcat(modeval, nick);
1667 }
1668
1669 *mptr = '\0';
1670
1671 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN | CLICAP_CHGHOST, chptr,
1672 ":%s!%s@%s JOIN %s", nick, user, host, chptr->chname);
1673 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, CLICAP_EXTENDED_JOIN, CLICAP_CHGHOST, chptr,
1674 ":%s!%s@%s JOIN %s %s :%s", nick, user, host, chptr->chname,
1675 EmptyString(target_p->user->suser) ? "*" : target_p->user->suser,
1676 target_p->info);
1677
1678 if(*mode)
1679 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, NOCAPS, CLICAP_CHGHOST, chptr,
1680 ":%s MODE %s +%s %s", target_p->servptr->name, chptr->chname, mode, modeval);
1681
1682 *modeval = '\0';
1683 }
1684
1685 /* Resend away message to away-notify enabled clients. */
1686 if (target_p->user->away)
1687 sendto_common_channels_local_butone(target_p, CLICAP_AWAY_NOTIFY, CLICAP_CHGHOST, ":%s!%s@%s AWAY :%s",
1688 nick, user, host,
1689 target_p->user->away);
1690
1691 sendto_common_channels_local_butone(target_p, CLICAP_CHGHOST, NOCAPS,
1692 ":%s!%s@%s CHGHOST %s %s",
1693 target_p->name, target_p->username, target_p->host, user, host);
1694
1695 if(MyClient(target_p) && changed_case)
1696 sendto_one(target_p, ":%s!%s@%s NICK %s",
1697 target_p->name, user, host, nick);
1698
1699 /* TODO: send some snotes to SNO_NCHANGE/SNO_CCONN/SNO_CCONNEXT? */
1700 }
1701 else if(changed_case)
1702 {
1703 sendto_common_channels_local(target_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s",
1704 target_p->name, user, host, nick);
1705
1706 if(MyConnect(target_p))
1707 sendto_realops_snomask(SNO_NCHANGE, L_ALL,
1708 "Nick change: From %s to %s [%s@%s]",
1709 target_p->name, nick,
1710 target_p->username, target_p->host);
1711 }
1712
1713 if (user != target_p->username)
1714 rb_strlcpy(target_p->username, user, sizeof target_p->username);
1715
1716 rb_strlcpy(target_p->host, host, sizeof target_p->host);
1717
1718 if (changed)
1719 whowas_add_history(target_p, 1);
1720
1721 del_from_client_hash(target_p->name, target_p);
1722 rb_strlcpy(target_p->name, nick, NICKLEN);
1723 add_to_client_hash(target_p->name, target_p);
1724
1725 if(changed)
1726 {
1727 monitor_signon(target_p);
1728 del_all_accepts(target_p);
1729 }
1730 }
1731
1732 bool
1733 has_common_channel(struct Client *source_p, struct Client *target_p)
1734 {
1735 rb_dlink_node *ps, *pt;
1736 struct membership *ms, *mt;
1737 struct Channel *chptr;
1738
1739 ITER_COMM_CHANNELS(ps, pt, source_p->user->channel.head, target_p->user->channel.head, ms, mt, chptr)
1740 {
1741 if (ms != NULL && mt != NULL)
1742 return true;
1743 }
1744
1745 return false;
1746 }
1747
Fork of solanum ircd, history is rebased regularly